Supercritical CO2 extraction (SCFE) is a safe method of efficient botanical extraction using a clean, non-toxic solvent ideal for cannabis, hops and more. CO2 extracts are popular in cosmetics. Despite their popularity, CO2 extracts remain a mystery to many. In this article we explained exactly what they are. Learn how CO2 cannabis extracts are produced and familiarize yourself with the science behind this versatile extraction method.
Two types of CO2 Supercritical Extracts are generally available:. CO2 Selects generally contain the volatile aromatic components of the botanical that are soluble in liquefied CO2. Aromatic molecules each have their own molecular weight.
Some aromatic molecules are too heavy to be present in a steam distilled essential oil. However, some of the heavier aromatic molecules are present in CO2 Selects. Therefore, CO2 Selects often smell closer to the aroma of the natural herb than do some steam distilled essential oils.
To create a CO2 Total , much greater pressure is used. CO2 Totals contain all or most all of the molecules that are soluble in the liquefied CO2. CO2 Totals tend to be much thicker than CO2 Selects as they not only contain the volatile aromatic CO2 soluble constituents, but they also contain the natural lipids, waxes, and other CO2 soluble molecules present in the botanical. AromaWeb's Gobal Aromatherapy Business Directory provides a wonderful categorical directory of sellers of CO2 Extracts and other aromatherapy products.
Gingerol and shogaol, the most pungent, warming compounds in Ginger are best extracted with carbon dioxide, not with steam distillation. Because the plant material is not exposed to air oxygen or heat, as compared to steam distillation, none of the compounds change or oxidise during extraction. Hence, the final extract is just the same as in the plant - the same composition and aroma. In the case of German Chamomile CO2 extract, matricin is not converted to the dark blue chamazulene, as in the steam distilled oil.
In studies, matricin was shown to be 10 times more potent in reducing inflammation than chamazulene. Steam distilled German Chamomile is still quite useful, however. It appears chamazulene may well be more active in cases of allergic skin reactions. Carbon dioxide, as compared to using hexane for extraction, fully evaporates from the final extract, leaving an extremely pure extract with no solvent residues.
We show you how to make a useful skin-friendly aloe vera repairing mist as follow up to our article The tradition of creating homemade skincare has long been part of many cultures around the world, with recipes often You must be logged in to post a comment. We love receiving your emails.
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What are CO2 Extracts (CO2s)?
Hypercritical carbon dioxide extraction is a relatively new process used to extract the essence of the plant. When a certain amount of pressure is applied to CO2. CO2 Extracts are superior to essential oils in specific ways. Learn about them, how they compare to essential oils, how CO2 supercritical extraction is performed . What is CO2 Extraction. CO2 extraction is a process that uses pressurized carbon dioxide to pull the desired phytochemicals from a plant. In the.